| 摘要 |
A Bridge Call Appearance (BCA) Group including a plurality of peer-to-peer packet-based devices and methods for operating the BCA Group are provided by embodiments of the present invention. In the BCA Group at least one peer-to-~peer packet-based device is designated as a primary device and remaining peer-to-peer packet-based devices are designated as secondary devices. The secondary devices provide support for the primary device when the primary device is unavailable. The primary network device acts as an intermediary for protocol signaling involving a secondary network device and an other device with which the secondary network device is communicating. Examples of call processing features used in the BCA Group environment are answering incoming calls, placing outgoing calls, performing a blind transfer, and performing an attended transfer.
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